It’s another jam-packed Tuesday in Concord – get out your specially designed, handlebar-equipped hats, put them on your heads and then hold on to them! First off, we suggest you check out the latest exhibit at McGowan Fine Art. “People: Public, Private” features a bevy of paintings by John Bonner that will tap into your voyeuristic side. People-watching is the name of the game; Bonner’s oils appear almost photorealistic at a distance, and his subjects are snapshots of city life, capturing the mystery that lies within everyday travails. Some of these pieces are huge; they command the attention of the room and really ought to be seen in person. McGowan Fine Art (10 Hills Ave.) is open from 10 a.m. to 6 p.m. today. For more information, visit mcgowanfineart.com.

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Next, we’re sending you into uncharted territory. St. Paul’s School hosts “Mapping the Merrimack” tonight at 7 p.m. David Stewart-Smith lectures on the early attempts to map the Merrimack River, way back in 1638. It’s a cartographer’s dream – even if you thought the blue on the map was land, Buster Bluth-style. The event is free, but space is limited, so to attend, pre-register at mappingthemerrimack.eventbrite.com.

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Finally, we’ve got three corrections from last week’s columns. First, the movie Pain & Gain is a Michael Bay-helmed flick about the world of bodybuilding, not a documentary about our attempt to eat two large pizzas in one sitting. Next up, a correction we received from a reader. Last week, we wrote “If Engelbert Humperdinck were alive today. . .” and that intrepid reader pointed out that, indeed, Humperdinck is alive, well and touring as we speak. Fortunately, we preemptively ran a correction for that mistake later in the same sentence, as the punchline. Our final correction is actually to a mistake we made earlier in this very column! When we reported that we had three corrections to run today, that was a mistake; we only had two. We’ll try to do better next time.